package top.likeqc.blog.web.admin;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import top.likeqc.blog.pojo.Type;
import top.likeqc.blog.service.TypeService;

import javax.validation.Valid;

/**
 * @author likeqc.top
 * @date 2021/4/16 19:13
 */
@Controller
@RequestMapping("/admin")
public class TypeController {

    @Autowired private TypeService typeService;

    @GetMapping("/types")
    public String types(
            @PageableDefault(
                            size = 10,
                            sort = {"id"},
                            direction = Sort.Direction.ASC)
                    Pageable pageable,
            Model model) {
        model.addAttribute("page", typeService.listType(pageable));
        return "admin/types";
    }

    @GetMapping("/types/input")
    public String input(Model model) {
        model.addAttribute("type", new Type());
        return "admin/types-input";
    }

    @GetMapping("/types/{id}/input")
    public String editInput(@PathVariable Long id, Model model) {
        model.addAttribute("type", typeService.getType(id));
        return "admin/types-input";
    }

    /**
     * 新增分类
     *
     * @param type 分类实体（前端提交的属性会自动封装成一个实体对象）
     * @return
     */
    @PostMapping("/types")
    public String post(@Valid Type type, BindingResult result, RedirectAttributes attributes) {
        if (typeService.getTypeByName(type.getName()) != null) {
            result.rejectValue("name", "nameError", "不能重复添加分类");
        }
        if (result.hasErrors()) {
            return "admin/types-input";
        }
        Type type1 = typeService.saveType(type);
        if (type1 == null) {
            // 没有保存成功
            attributes.addFlashAttribute("message", "新增失败");
        } else {
            // 成功保存
            attributes.addFlashAttribute("message", "新增成功");
        }
        return "redirect:/admin/types";
    }

    @PostMapping("/types/{id}")
    public String editPost(
            @Valid Type type,
            BindingResult result,
            @PathVariable Long id,
            RedirectAttributes attributes) {
        if (typeService.getTypeByName(type.getName()) != null) {
            result.rejectValue("name", "nameError", "不能重复添加分类");
        }
        if (result.hasErrors()) {
            return "admin/types-input";
        }
        Type type1 = typeService.updateType(id, type);
        if (type1 == null) {
            // 没有保存成功
            attributes.addFlashAttribute("message", "更新失败");
        } else {
            // 成功保存
            attributes.addFlashAttribute("message", "更新成功");
        }
        return "redirect:/admin/types";
    }

    @GetMapping("/types/{id}/delete")
    public String delete(@PathVariable Long id, RedirectAttributes attributes) {
        typeService.deleteType(id);
        attributes.addFlashAttribute("message", "删除成功");
        return "redirect:/admin/types";
    }
}
